Any cool or recommended mastery unlocks? I don't think I am going to hit 20 on all (or any) of them, but a cool goal to shoot for would be sweet.
The most-used unlocks are basically these (either with unique functionality or very convenient):
- Paris level 10: Silverballer.
- Sapienza level 5: remote breaching charge.
- Sapienza level 10: lethal poison vial.
- Sapienza level 10: remote audio distraction.
- Marrakesh level 10: emetic poison vial.
- Marrakesh level 15: remote explosive duck.
- Bangkok level 10: "Mixtape 47".
- Bangkok level 20: Krugermeier 2-2.
- Colorado level 5: emetic poison syringe.
- Colorado level 10: concealable baton.
- Colorado level 15: disposable scrambler.
Along the way you'll unlock some hilarious items everybody should try once, like the exploding phone and the silenced shotgun from Bangkok.
You also need to unlock a sniper rifle of some kind, but the very best of all is most likely coming with Hokkaido. Probably level 20.